Grade 6490

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M50 is a premium-melted alloy. It offers excellent resistance to multi-axial stresses and good resistance to oxidation. The product is refined using vacuuminduction melting (VIM) and vacuum-arc remelting (VAR) processes. It possesses high compressive strength suitable for a high speed steel tool. It also has a high degree of cleanliness therefore can be finished to a high luster. M50 is a bearing steel suitable for use within the missile and bearing industry, offering high wear resistance and strength at elevated temperatures. Bearings within aircrafts and gas turbines are other typical applications of this alloy. M50 could also be used in tooling applications where high levels of performance are required.

Related Standards

Equivalent Materials

This material data has been provided by Matmatch.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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23.0 °C

7.87 g/cm³

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Elastic modulus

23.0 °C

190 - 210 GPa

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Typical for Steel

Poisson's ratio

23.0 °C

0.3 [-]

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Typical for Steel

Chemical properties



0 - 0.85 %

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0 - 4.1 %

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0 - 0.3 %

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0 - 4.25 %

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0 - 0.2 %

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1 %

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0 %

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